PUBLICATION
Short-term polystyrene nanoplastic exposure alters zebrafish male and female germline and reproductive outcomes, unveiling pollutant-impacted molecular pathways
- Authors
- Pujol, G., Marín-Gual, L., González-Rodelas, L., Álvarez-González, L., Chauvigné, F., Cerdà, J., Teles, M., Roher, N., Ruiz-Herrera, A.
- ID
- ZDB-PUB-241119-8
- Date
- 2024
- Source
- Journal of hazardous materials 481: 136529136529 (Journal)
- Registered Authors
- Cerdà, Joan
- Keywords
- Fertility, Germ cells, Nanoplastics, Testis, Zebrafish
- Datasets
- GEO:GSE279916
- MeSH Terms
-
- Oocytes/drug effects
- Polystyrenes*/toxicity
- Testis*/drug effects
- Nanoparticles/toxicity
- Male
- Zebrafish*
- Water Pollutants, Chemical*/toxicity
- Female
- Animals
- Microplastics/toxicity
- Reproduction*/drug effects
- Spermatozoa*/drug effects
- PubMed
- 39556913 Full text @ J. Hazard. Mater.
Citation
Pujol, G., Marín-Gual, L., González-Rodelas, L., Álvarez-González, L., Chauvigné, F., Cerdà, J., Teles, M., Roher, N., Ruiz-Herrera, A. (2024) Short-term polystyrene nanoplastic exposure alters zebrafish male and female germline and reproductive outcomes, unveiling pollutant-impacted molecular pathways. Journal of hazardous materials. 481:136529136529.
Abstract
Nanoplastics pollution is a rising environmental concern whose impacts on biodiversity and human health are far from being understood. This is particularly salient in aquatic ecosystems, where the majority of species depend on external fertilization for reproduction. Here we evaluated the effects of a short-term exposure to engineered polystyrene nanoplastics (NPs) in the zebrafish germline to further explore their impact on reproduction. To this end, zebrafish (Danio rerio) were exposed to 5 mg/L of 45 nm polystyrene (PS)-NPs via water for 96 h. We show that, in males, nanoplastics induced testicular histological alterations with abnormal sperm clustering and chromatin compaction, resulting in viable spermatozoa but with reduced motility. Moreover, in females we observed an alteration in oocyte stages frequencies during oogenesis, possibly reflecting alterations in oocyte growth. RNA-sequencing analysis in male testis links nanoplastic induced alterations in the expression of genes involved in chromatin structure, meiosis and DNA double-strand break formation and repair progression, and gametes recognition. Flow cytometry analysis revealed that the observed effects in males were directly due to nanoplastics penetrating the testicular barrier and being internalized within germline cells. Overall, our results demonstrate that acute exposure to NPs can compromise reproductive fitness, underscoring the environmental and health impacts of NPs pollution.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping